METHOD OF DETERMINING CONCENTRATION OF SUBSTANCE IMPURITIES IN GASES Russian patent published in 2000 - IPC

FIELD: gas analyses; applicable in environmental control and sanitary monitoring, etc. SUBSTANCE: method consists in ionization of gas sample, taking of formed ions from region of ionization by pulse electric field with varying frequency of pulse recurrence, separation of taken ions and their registration. Ions are taken into vacuum or into flow of carrier gas whose velocity is higher than that of gas sample flow. EFFECT: extended dynamic range, higher performance in terms of error probability and accuracy in measurement of concentration of substances micropurities in gases. 3 cl, 1 dwg